Requirements:
dplyr v>=1.0.0
library(dplyr)
# Data preparation
df <- as_tibble(iris)
df
## # A tibble: 150 x 5
## Sepal.Length Sepal.Width Petal.Length Petal.Width Species
## <dbl> <dbl> <dbl> <dbl> <fct>
## 1 5.1 3.5 1.4 0.2 setosa
## 2 4.9 3 1.4 0.2 setosa
## 3 4.7 3.2 1.3 0.2 setosa
## 4 4.6 3.1 1.5 0.2 setosa
## 5 5 3.6 1.4 0.2 setosa
## 6 5.4 3.9 1.7 0.4 setosa
## 7 4.6 3.4 1.4 0.3 setosa
## 8 5 3.4 1.5 0.2 setosa
## 9 4.4 2.9 1.4 0.2 setosa
## 10 4.9 3.1 1.5 0.1 setosa
## # … with 140 more rows
# Select varibales
variables = c("Species", "Sepal.Length")
df %>% select(any_of(variables))
## # A tibble: 150 x 2
## Sepal.Length Species
## <dbl> <fct>
## 1 5.1 setosa
## 2 4.9 setosa
## 3 4.7 setosa
## 4 4.6 setosa
## 5 5 setosa
## 6 5.4 setosa
## 7 4.6 setosa
## 8 5 setosa
## 9 4.4 setosa
## 10 4.9 setosa
## # … with 140 more rows
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